<template>
	<view class="cart-container" v-if="cart.length !== 0">
		<!-- 收货地址组件 -->
		<my-address></my-address>
		
		<!-- 商品列表的标题区域 -->
		<view class="cart-title">
			<!-- 左侧图标 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 右侧文本 -->
			<text class="cart-title-text">购物车</text>
		</view>

		<!-- 右侧滑动删除 -->
		<uni-swipe-action>
			<!-- 循环渲染购物车的商品信息 -->
			<block v-for="(goods , i) in cart" :key="i">
				<uni-swipe-action-item :right-options="options" @click="swipeItemHandler(goods)">
					<my-goods :goods="goods" :show-radio="true" :show-num='true' @radio-change="radioChangeHandle"
						@num-change="numberChangeHandler"></my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>

		<!-- 自定义组件结算页面 -->
		<my-settle></my-settle>
		
	</view>

	<!-- 空白购物车区域 -->
	  <view class="empty-cart" v-else>
	    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
	    <text class="tip-text">空空如也~</text>
	  </view>
</template>

<script>
	import badgeMix from "@/mixins/tabber-badge.js"
	import {
		mapState,
		mapMutations
	} from "vuex"

	export default {
		mixins: [badgeMix],
		computed: {
			...mapState('m_cart', ['cart'])
		},
		data() {
			return {
				options:[{
					text : "删除",
					style:{
						backgroundColor : "#87ceeb",
					}
				}]
			};
		},
		methods: {
			...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount','removeGoodsById']),
			// 商品勾选状态发生变化
			radioChangeHandle(e) {
				// console.log(e);
				this.updateGoodsState(e)
			},
			// 商品的数量发生变化
			numberChangeHandler(e) {
				// console.log(e);
				this.updateGoodsCount(e)
			},
			// 点击删除
			swipeItemHandler(goods){
				this.removeGoodsById(goods.goods_id)
			}
		}
	}
</script>

<style lang="scss">
	.cart-container{
		padding-bottom: 50px;
	}
	.cart-title {
		height: 40px;
		display: flex;
		align-items: center;
		padding-left: 5px;
		border-bottom: 1px solid #efefef;

		.cart-title-text {
			font-size: 14px;
		}
	}
	
	.empty-cart {
	  display: flex;
	  flex-direction: column;
	  align-items: center;
	  padding-top: 150px;
	
	  .empty-img {
	    width: 90px;
	    height: 90px;
	  }
	
	  .tip-text {
	    font-size: 12px;
	    color: gray;
	    margin-top: 15px;
	  }
	}
</style>
